William wesley wells



(No Model.)

W. W. WELLS.

FRICTION PULLEY.

No. 349,547. ate

ed Sept. 21,1886..

INVENTIOR M v f 42 @z/ TNESSES N. PEYERS. HMwUlho n h-r. Washington, ac.

UNITED STATES PATENT OFFICE.

WILLIAM WESLEY WELLS, OF SANDY HILL, N. Y., ASSIGNOR TO HIMSELF,

HARRY E. TIDMARSH, AND JOHN SMITH, ALL OF SAME PLACE.

FRICTION PULLEY.

SPECIFIC ZATIQN forming part of Letters Patent No. 349,547, dated September 21, 1886.

Application filed March ll, 1886. Serial No. 194,85l. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM WESLEY WELLS, of Sandy Hill, in the county of Washington and $tate of New York, have invented certain new and useful Improvements in Fricpulleys, the object being to construct and combine with the shell or periphery of the pulley a simple and powerful friction-cl utch, by means of which the said shell can be made to rotate with its shaft or can be readily disengaged, so as to turn idly thereon.

The invention consists in the construction and novel arrangement of parts hereinafter described, illustrated in the drawings, and pointed out in the claims hereto appended.

Referring to the accompanying drawings, A designates a shaft, upon which is a pulley, B, from which a belt, B, conveys power to or receives the same from any suitable mechanism. The shaft A has end bearings, a a, properly located, as shown.

0 is the shell or perimeter of the pulley, in the form of a hollow cylinder, and having the hub c, to which it is joined by the equidistant arms 0.

D is the internal conical seat formed on the shell 0 to one side of the arms 0, the said side being designated by 0 E is a friction-block having a hub, e, keyed or otherwise secured upon the shaft A at any proper point and immovable therefrom. The hub 6 passes through the hub c, the latter being capable of turning freely'on the former. The hub e is connected with the periphery of the block by the web 0. and proper spokes, and its tread or bearing-surface e" is madeon the section of a cone, to correspond with the interior bearing-surface, D, of the shell 0.

F is a collar sliding on the shaft A and provided with a circumferential groove, f, in

Fig. 2 is a vertical transverse which engage the ends of the arms f of the lower bifurcated ends of a lever, F, pivoted upon a proper support, asshown.

G G are bars or arms of substantially similar construction, having their inner ends formed into the yokes g g, respectively. The said yokes have the ends of their arms pivoted upon the collar F, the yoke 9 having shoulders 9 upon the said ends, which overlie the ends of the arms 9, the bars G G being radially opposite each other with reference to the collar.

g? are thepivot-bolts' which pass through the ends of the arms of the yokes g g and connect the same to the collar. The outer ends of the bars G G are hinged or pivoted to the ends of the outer arms, h, of similar angle bars, H, pivoted at their angles upon the supports h h, standing from the web of the friction-block E. The ends of the inner arms, h of said angle-bars are rounded or disk-formed, and pass into slots 13 on the outer ends of the bars I. The inner ends of the said bars,which pass through proper openings in the web of the friction-block,as shown, are threaded, and pass through openings in ears j,standing from a ring, J, forming part of or shrunk or otherwise fixed upon the hub e of the shell 0.

jj are nuts on the inner ends of the bars I, situated on both sides of the ears j, and securing the bars thereto. The said earsare split radially, and have passing through both portions,on either side of said splits, the screws j so that wear can be taken up and the hub e tightened on the hub c;

The manner in which the device operates is as follows: It being desiredto make the pulley B rotate the shaft A, the lever F is moved so as to cause the shell 0, by ineansof the bars I, angle-bars'H, yoked bars G G, and collar F, to move upon the friction-block and cause the beveled portion D of the shell to bear on the beveled periphery e of the friction-block E. The shell is disengaged and allowed to turn idly on the friction-block by reversing the motion of the lever F.

Having described my invention, I claim- 1. The combination of the friction -l)lock fixed upon the shaft and having a conical bearing-surface on its exterior, the pulley-shell having a corresponding interior bearing-surface, the sliding circumferentiallygrooved collar controlled by a forked lever, the bifurcated arms pivoted to said collar, and the an- 3 gle-barspivoted to the outer ends of said arms and at their angles to supports projecting from e, the collar F, provided with the groove f, the pivoted bifurcated lever F, the bars G G, provided with the yokes g g, pivoted 011 said collar, the angle-bars H, and slotted bars I,

secured to the ears J on the hub c of the shell 20 I 0, all constructed and arranged substantially as and for the purposes specified.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

WILLIAM WVESLEY W'ELLS.

\Vitnesses:

MARoUs G. ALLEN, 'HERMON L. MASON. 

